Bruce, bravo - a concise but very effective explanation. I want to convert the defective electric sunroof of my 1969 W108 into manual and friends told me to use the manual sunroof mechanism of a W123. I does make sense. However as there may be a difference in width between sunroofs of W108 and W123, I assume that the only thing for me to do is to adjust the length of the "arms". What do you think? If so, could you give the website or emaill address of the salvage yards who have the W123 manual sunroof mechanism, please.Thanks Bruce,
cheers, Tony Tumbelaka